I have been using this mill for about 2 months now. The mill is heavy-duty and seems to be made to last. However, it does not produce a fine enough grind to make flour, no matter how many times you put it through the mill. Also, it siezed up and stopped working after the fifth series of grinding. The flours apparently heated and melted/adhered to the gears. It took several hours of scraping after taking it apart to get it working again. I love my Kitchenaid mixer, but would definitely not recommend the mill attachment if your goal is to make flour for baking.
Fantastic buy. This attachment is so much better and way way cheaper than the one available in Australia as its all metal (not plastic). It is exactly as described. It did take a little while to get to me, but there were quite a few public holidays in between. Extremely happy with my purchase!